Braiding carrier



April 17, 1934. H JANSSEN 1,955,718

BRAIDING CARRIER Filed Nov. 5, 1931 ATTORNEY Patented Apr. 17, 19394UNIE TA BRAIDING Nil CARRER Henry Janssen, Wyomissing, Pa., assignortoTextile Machine Works, Wyomissing, Fa., a corporaticn of PennsylvaniaApplication November 5,

1931, Serial No. 513,143

8 Claims. v(Cl. 96--15) This invention relates to yarn carriers, andparticularly to carriers employed in braiding machines; one object beingto provide such a carrier with a novel yarn tensioning member forcontrolling bobbin engaging means adapted to permitbobbin rotation inthe feeding direction as well as rotation thereof in the opposite oryarn rewinding direction, while in such engaging position.

The invention comprises a braiding carrier having the novel elements,features of construction and arrangement of parts in cooperativerelationship as herein set forth by one illustrative embodiment thereof.

Other objects and attendant advantages will become more readily apparentfrom the following detailed description, reference being had to theaccompanying drawing in which:

Fig. 1 is a side View, elevational of a braiding 20 carrier embodying myinvention; the bobbin or yarn package holder being partly broken awayand.Y in section, and the yarn and yarn package being shown indot-and-dash lines.

Fig. 2 is avfragmentary side view, similar to Fig, 1, but showingcertain parts in another position.

Fig. 3 is a cross-sectional `view taken substantially as indicated bythe arrows 3--3 on Fig. 2.

Fig. 4 is a bottom plan view of the bobbin or yarn package holder shownin Figs. l and 2.

Fig. 5 is a cross-sectional'view taken substantially as indicated by thearrowsB-ron Fig. 2.

Referring to the drawing, reference numeral indicates a suitably shapedand constructed base member or carrier which is provided with a bearing1l, and an offset portion 12.

Rigidly secured to the base member 10 is a standard 13 on which a bobbinor yarn package holder 14 is mounted for free rotation as well as axialmovement; the latter movement being limited by a nut 15 screwed to theupper end oi standard 13. Ratchet teeth 16 are provided at the lower`end of yarn packageholder 14.

Fixed in the portion 12 of base member l0, is a yarn guide rod 17provided with a suitable yarn guide eyes, such as 18 and 19, throughwhich the yarn passes, as shown in Fig. 1.

A bifurcated tension lever 20 is rockably mounted on the base member 10,which, in the present instance, is made of a single piece of sheet metaland has integrally formed thereon a yarn guide hook 21 and a member 22,comprising two parts 22a and 22h. For convenience, I shall hereinafterrefer to the member 22 as a cam-stop member. From Fig. 5 it will beclear that parts 22a andv22b of this member function while in ratchetteeth engaging position; the part 22a as a stop to prevent feedingrotation of the holder 14; and cam part 22h to permit the holder 14 tobe reversely rotated, as for rewinding of the yarn,

Vby allowing ratchet teeth 16 to ride therealong and over stop-edge 22a.This latter action causes the holder 14 to be shifted or axiallyreciprocated on standard 13.

A tubular connecting piece 23, journaled in bearing 1l, is riXedlysecured to the bifurcations or" lever 2G, as clearly shown, and haswithin it aA spiral spring 24 having one end anchored to base member 10,as at 25, and its other end connected to a projecting part 26 on lever20. The action of spring v24 tends to force lever 2i) downwardly andthis action may be increased er decreased by simply disconnecting one ofthe ends of the spring and turning it one way or the other so as toincrease for decrease the spring tension.

During normal operation, the yarn is tensioned by the lever 20 andspring 24, increasing slack. being taken up when the lever movesdownwardly until the yarn 'package stop-edge 22a of camstop 22 engagesor contacts with a tooth 16 on yarn package holder 14, and preventsfurther rotating of the latter. Continued feeding of the yarn thenraises lever 2G until cam-stop 22 is disengaged from the tooth 16,thereby again permitting yarn package holder 14 to rotate to let ofi"yarn.

It will be noted that the cam edge 22h extends beyond the bot-torn edgeof teeth 16 when the lever 2O is in its extreme lowered position, i. e.,when the yarn is slack. Consequently, if the yarn package holder 14 isrotated in reverse direction-as for instance, during reverse loperationof the braiding machine in which it is employed, for the purpose ofunwinding the braid and rewinding the yarn on the yarn package-teeth 16will con- 95 tact with cam part 22h, thereby forcing the yarn packageholder 14 upwardly until teeth 16 pass over the stop-edge 22a. Morespecifically, the carrier 10 traverses a sinuous path in the slottedraceway at relatively high speed in a reverse direction, causing thecarrier rapidly to oscillate aboutits axis; during alternate half cyclesin this oscillating period the yarn carrier is intermittently rotating adirectie-11 such that the stopedge 22a will engage one of the teeth 16of the 105 bobbin, as shown in Fig. 5, and the bobbin 14 will thereby berotated in the same direction as the carrier, thus causing the yarn tobe rewound on the yarn package carried thereby; during the other halfcycles of the oscillating period the carl rier l0 is intermittentlyrotated in a reverse direction, but due to the inertia of the yarnpackage and bobbin, and b-ecause of the fact that the bobbin may riseand is axially reciprocable on standard 13, the inclined surface of thecam part 22h will cause the teeth 16 of the bobbin successively to ridealong the inclined surface of 22h and over stop-edge 22a, so that thebobbin does not rotate with or follow the yarn carrier in its reverserotation, but has imparted thereto an intermittent rotary motion in adirection to continue reivinding of the yarn on the package.

Of course, the braiding carrier specifically shown and described may bechanged and modified in various ways without departing from theinvention herein disclosed and hereinafter claimed.

claim:

l. ln a braiding carrier, the combination with a base member providedwith a bearing, a bobbin standard rigidly secured to said base member,and a bobbin provided with ratchet teeth rotatably mounted o-n saidstandard; of a bifurcated yarn tension lever provided with a cam-stopmember adapted to cooperatively engage said ratchet teeth to stopfeeding rotation of bobbin and permit rewinding rotation thereof whilein such engaging position, a tubular bifurcation connecting memberjournalled in said bearing, and a spring within said co-nnecting memberhaving one end anchored and its other end secured to said lever.

2. In a braiding carrier, the combination with a base member providedwith a bearing, a bobbin standard rigidly secured to said base member,and a bobbin provided with ratchet teeth rotatably mounted on saidstandard and axially reciprocable thereon; of a bifurcated yarn tensionlever provided with a cam-stopv member adapted to cooperatively engagesaid ratchet teeth to stop rotation of the bobbin in one direction andpermit rotation thereof in the opposite direction by axiallyreciprocating the same, a bifurcation connecting member journalled insaid bearing, and means on said standard for limiting axial movenent ofthe bobbin.

3. In abraiding carrier, the combination with a base member providedwith a bearing, a bobbin standard rigidly secured to said base member,and a bobbin provided with ratchet teeth rotatably mounted on saidstandard and axially reciprocable thereon; of a bifurcated yarn tensionlever provided with a cam-stop member adapted to cooperatively engagethe ratchet teeth to stop rotation of the bobbin in one direction andpermit rotation thereof in the opposite direction while in such engagingposition, a bifurcation connecting member journalled in said bearing,and a spring for actuating the lever.

fi. A braiding carrier comprising a base member, a bobbin standardsecured to said base member, a bobbin rotatably mounted on said standardand axially reeiprocable thereon, a ratchet element on said bobbin, ayarn tension lever fulcrumed on said base member at a point intermediatethe ends of the lever, said lever having at one end thereof yarn guidemeans integral therewith, and having at its other end a ratchet elementintegral therewith adapted to coact with the ratchet element on saidbobbin to stop bobbin rotation in one direction and lift the bobbin onsaid standard to permit rotation of the bobbin in the opposite directionto cause rewinding of the yarn on the package carried thereby, said lastnamed ratchet element being disposed relative to said fulcruin point sothat the rewinding action of the bobbin does not affect the position ofthe lever at that time.

5. A braiding carrier comprising a base member, a bobbin standardsecured to said base member, a yarn package bobbin rotatably mounted onsaid standard and axially reciprocable thereon, a ratchet member on saidbobbin, a yarn tension lever fulcrumed intermediate its ends, said leverhaving means including a ratchet member integral therewith adapted toengage the ratchet member on said bobbin and operative during rotationof the bobbin in a direction to cause revvinding of the yarn on thepackage carried thereby for lifting the bobbin to permit movement of theratchet members relative to each other, said ratchet member on the leverbeing disposed relative to its fulcrum point so that the rewindingaction of the bobbin does not affect the position of the lever at thattime.

6. A braiding carrier comprising a base adapted to travel in the racewayof a braiding machine, a bobbin standard secured to said base member, ayarn package bobbin rotatably mounted on said standard and axiallyreciprocable thereon, a ratchet member on said bobbin, a yarn tensionlever fulcrumed intermediate its ends and having integral therewith aratchet member adapted to coa-ct with the ratchet member on said bobbin,one of said ratchet members having a cam surface for lifting the bobbinon its standard to permit movement of the ratchet members relative toeach other during rotation of the bobbin in a direction to causerewinding of the yarn on the package carried thereby, said cam surfacebeing disposed relative to the fulcrum point of the lever so that therewinding action of the bobbin does not affect the position of the leverat that time..

7. The combination with a braiding carrier, of a base member, a bobbinstandard secured there- ,t

to, a bobbin rotatably mounted on said standard and axially reciprocablethereon, a thread tencable thereon; of a bifurcated yarn tension lever vprovided with a cam-stop member extending from the end of thebifur'cated part of said lever and adapted to cooperatively engage saidratchet teeth to stopy rotation of the bobbin in one direction andpermit rotation thereof in the opposite direction by axiallyreciprocating the samaand a bifurcation connecting member journalled insaid bearing.

HENRY JANSSEN.

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